Well Logging Comprehensive Evaluation Of S4 Sand And Conglomerate Reservoir In Steep Slope

In order to clarify the characteristics of steep slope S4 sandstone and conglomerate in D area and expand the exploration results,it is confirmed that it is extended to the north of slope to the exploration idea on the basis of existing exploration results in old area.In this paper,the theory and method of sedimentation,petroleum geology,tectonic geology and interpretation and treatment of logging data are taken as an example to study the four main sand bodies in the study area.Using logging,core,logging and earthquake,Reservoir logging,logging parameters,logging reservoir identification and classification and evaluation are studied in D-zone depression slope S4 sandstone,conglomerate,gravelly sandstone and breccia reservoir.Based on the lithology classification of rock and rock,the identifiable lithology in the logging data is divided into 11 categories and 11 subclasses.The three categories are: mudstone,sandstone and Conglomerates,11 kinds of sub-categories are mudstone,gravel mudstone,carbonaceous mudstone,gray sandstone,siltstone,fine sandstone,coarse sandstone,argillaceous conglomerate,gritstone,granitic conglomerate,mixed conglomerate The According to the characteristics of different lithology logging curves,the typical curves of each lithology are produced,and the corresponding lithologic identification intersection map is made.The lithology is divided into two wells in the work area,and finally,And the results of the logging lithology were compared with the experimental results of 17 rock samples with a total of 145 rock samples.The coincidence rate was 87.03%,and the results were compared with those of 19 logging cuttings The results of the second review were 94.73%.At the same time,the reservoir mud content,porosity,water saturation and permeability model were established according to the core data and the oil test data.The wells in the study area were studied by model.The calculated results are in contrast to the core experimental data.The absolute error of porosity is less than 0.4% and the relative error is less than 7%,which satisfies the control reserve calculation requirement.Finally,through the second review of the wells in the area of 104,two oilfields for two wells were proposed.The research results are of great practical significance to guide the oil and gas exploration and development and well location deployment in the west slope of D area.